Garten



(No Model!) 2 Sheets-Sheet I.

G. MORGAN & REDLINGER, Jr. COFFEE MILL.

No. 495,099. Patnted'Apr. 11, 1893.

J a far 5r 949,952 7mm THE NORRlS vnzns c0. PHOTOLH'HOU WASHINGTON. a.c.

(No Model.) 2 Sheets-Sheet 2.

' 0. MORGAN 89M. REDLINGER, Jr.

' COFFEE MILL.

No. 495,099. Patented Apr. 11, 1893.

W) 512.61 Z May/27m. I f I fifowg 9% W UNITED STATES PATENT OFFICE.

CHARLES MORGAN AND MATHIAS REDLIN GER, JR., OF FREEPORT, ILLINOIS,ASSIGNORS TO SAID MORGAN, EDGAR H. MORGAN, AND ALBERT BAUM- GARTEN, OFSAME PLACE.

COFFEE-MILL.

SPECIFICATION forming part of Letters Patent No. 495,099, dated April11, 1893.

Application filed February 20, 1892- Serial No. 422,250. (No model.)

To all whom it may concern: being held securely in place by the engage-Be it known thatwe,OHARLEs MORGAN and ment of the hubs, b, b, and.spout, 17 with MATHIAS REDLINGER, J12, both citizens of the the walls ofthe box. Within the shells B, United States of America, residing atFree-' B, are two conical grinding cones, D, D, 5' port, in the countyof Stephenson and State mounted on a horizontal shaft, E, which is ofIllinois, have invented certain new and usejournaled in the hubs, b, b.In the upper ful Improvements in Ooitee-Mills, of which surfaces of theshells, B, B, are formed openthe following is a specification. ings, O,O, for the admission of cofiee to the Our invention relates toimprovements in spaces between the cones and shells, and a [0 coffeemills and particularly in mills of the horizontal partition, 0, lieswithin the box class known as side mills which are adaptand is so formedand placed as to tit closely ed to be fastened against the wall or otherabout the outer margins of these openings in vertical support. themanner illustrated in Fig. 4. The space The invention is fully describedand exabove the partition, 0, is intended to be filled I5 plained inthis specification and shown in the with coffee, admitted through theopening at accompanying drawings, in which the top of the box, and thesupply thus af- Figure 1 is a central vertical section of a mill fordedmay be ground as required.

embodying our improvements, the plane of For the purpose of keeping thecoffee in section being through the line, a;0c, Fig. 4. the box in asgood condition as possible, we

20 Fig. 2 is an elevation of one of the grinding prefer to provide thebox with a screw threadcones of the mill. Fig. 3 is a horizontal secedneck, N, and a cap, N, also screw threaded tion through the line a:'0c,Fig. 1, the view toengage the neck. being downward. Fig. 4 is ahorizontal sec- The grinding cones are provided with a tion through theline o -39, Fig. 1, the view dress, such asis illustrated in Fig. 2, thegrind- 2 5 being downward. Figs. 5 and 6 are vertical ing teeth beingformed by means of annular sections through the line x m Fig. 1, thegrooves G, and approximately radial grooves, views being in oppositedirections and show- G, placed at suitable intervals and of such ing theinner faces of the grinding cones; and comparative depths as to form thelargest Fig. 7 is a vertical section through the line teeth near theapex, and the finer ones near 30 m ac Fig. 1, showing the connection ofthe the base thereof. The radial grooves are at crank with the shaft ofthe mill and the reguevery point slightly deeper than the corre- 8olating screw. sponding annular grooves, so that the ground In theseviews, A is a preferably rectangular material has constant opportunityfor escape box provided with an opening at its top for toward the baseor margin of each of the 35 the admission of coffee, and having a backcones. The shells are dressed to correspond piece whose edges extendabove and below with the dress of the cones, the teeth of the the bodyof the box and are formed with inner surfaces of the shells being soplaced screw holes forthe attachment of the box to that the teeth of thecones pass between them awall or other vertical support. In the lower inthe manner illustrated in section, Fig. 1.

40 part of the box are secured two conical grind- The two grinding conesare so formed with ing shells, B, B, provided respectively with relationto the horizontal shaft, E, on which hubs, b, b, which entercorresponding holes they are mounted as to rotate therewith, the in thefront and rear walls of the box. The shaft being provided with lugs, e,e, Fig. 5, edges of the bases of the shells are in close enteringcorresponding notches in the inner 5 contact, and each of them isprovided at its face of the shell, D, and the cone, D,-being lowermostpoint with a downward projection, provided with a lug, d, entering alongitudithe two projections, b b forming together a nal groove in theshaft, E, as shown in Figs. discharge spout, whose end lies in asuitable 2 and 6. opening in the bottom of the box, the shells In thelongitudinal groove in the shaft, E,

lies a rod, E, formed at its inner end into a flat coil encircling theshaft and lying in contact with the inner end of a hub formed on theinner face of the cone, D. The outer end of the rod,E, is screw threadedand provided with a nut by means of which the rod may be drawn outward,and between the nut and the face of the box, the shaft is encircled bythe hub, F, of a crank, F, adapted to turn the shaft and the cones, B,B, the hub being provided with a lug, f, Fig. 7, entering thelongitudinal groove in the shaft. The nut is provided with a locking:device adapted to prevent its accidental rotation with reference to theshaft, but this locking device forms no part of our present invention.It is evident, that if the rod, E, and the coil, E on its inner end bedrawn outward by the rotation of the nut, the cone, D, must becorrespondingly drawn outward and the space between the two conesincreased, thereby decreasing the spaces between the cones and theshells. The fineness to which material is ground by the mill may thus beregulated at will by means extremely simple and not liable to get out oforder.

On the lower surface of the bottom of the box are parallel cleats, A, A,formed with recesses in their upper inner margins, and between thesecleats is securely held the upper end of a cup, K, provided with anoutward marginal flange adapted to enter the recesses in the cleats. Thecup is made oval in form, as shown in Fig. 3, so that when in oneposition, it may be readily entered between the cleats, but when rotatedabout ninety degrees so as to bring its longer axis at right angles tothecleats,itispressedfirmlybetween them,and its flange is pressedclosely against the lower face of the bottom of the box. This cup formsa receptacle for the ground coffee, discharged by means of the spout, bthrough the bottom of the box, and it may evidently be readily put intoplace or detached, and when in place is perfectly secure. We have foundin practice that if the cup, K, be made of tin or other cleats, it maybe pressed directly inward between the cleats, the slight compression ofthe mouth of the cup being sufficient to give the necessary tension forholdingit in place. Our invention in this regard may therefore be statedbroadly as the combination with the cleats, of a sheet metal cup havinga diameter slightly greater than the space between the cleats. Theelliptical cup evidently has but one diameteror axis meeting thisrequirement, while the circular cup has every diameter of the requiredlength, but both forms come within the statement of this paragraph.

Having now described and explained our invention, what we claim as new,and desire to secure by Letters Patent, is-

1. The combination with the box and the grinding shells mounted therein,of the shaft, E, formed with a longitudinal groove, the cones, D, D,mounted on the shaft and rotating therewith, the rod, E, lying withinthe groove in the shaft and formed at its inner end with a ring incontact with the inner face of the cone, D, and a nut engaging the screwthreaded outer end of the rod, E, and adapted to regulate the spacebetween the cones and 1 CHARLES MORGAN. MATHIAS REDLINGER, JR.Witnesses:

JAMES W. HYDE, H. O. HYDE.

